Our Body Maps Are Plastic

The more time and attention moving a certain body part, will result in a bigger representation of that area in the brain.

For example:

people who use braille have a larger finger representation in the brain than the average person

similarly guitar players will have a bigger hand representation in the brain

Body maps (and movement) comes to down to habits

Imagine you’re heading down to Aldinga for a day trip, (which is a beautiful beach an hours drive south of Adelaide, that allows cars onto the sand).

You arrive at the beach and follow the ramp down, driving your car onto the beach.

As you drive along the sand, your car makes tracks in the sand.

You find a nice spot to park the car and get yourself set-up. After you’ve had a swim, you’re feeling refreshed…but then you realise you’ve forgotten to buy some snacks.

So you jump back in the car and as you start driving, you can see the tracks you’ve made earlier.

As the sand is harder under the tracks, it’s easier for your car to move along the same tracks and reduce the likelihood of you getting bogged.

Each time you make a trip along the beach, the tracks get a little deeper and it gets a little easier to drive because the sand gets a little firmer and the track is becoming more worn.

You automatically keep using the same track without even thinking about it.

Using the same track is very similar to what happens with our bodies - the car represents our bodies movement and the tracks represent the neural pathways in our brain.

As our brains begin to use this pathway more, it becomes second nature.

This process of re-wiring the brain and forming new connections is plasticity in action.

Essentially using the same habitual movement patterns over and over again without ever thinking about it.

To create new movement patterns is like carving out a new road.

If you’ve had pain for some time, your body goes into protective mode. Movement expression becomes limited and breaking out of this stereo-typed response is going to take considerable energy, effort and some serious intent.

In an ideal world…

In an ideal world, the brain has a perfectly sharp representation of the body and the brain/body have a variety of quality movement patterns (muscle memory) to handle the demands placed on it.

The body and mind are perfectly synchronised.

An example of this might be watching Roger Federer playing tennis or Eddy Betts playing AFL.

They make highly complex skills look easy and effortless.

Body maps change when you’re in pain

Initially, when you’ve injured yourself or are in pain, the body map representation of the involved area actually gets bigger.

This explains why you may feel an increase in pain sensitivity and mild pains can become magnified.

This is especially true if the body part is very important to you e.g. if you injured your finger if you’re a concert pianist or your knee if you’re a runner.

The Negative Side Of Plasticity - Smudging

Smudging refers to the reduced accuracy of the body maps in the brain that happens when you don’t use a particular area for a period of time.

Smudging can be caused by things like:

poor posture

ongoing pain

injury

inactivity

More about brain smudging with David Butler:

Smudging of the brain maps, otherwise known as the Homunculus, latin for ‘little person’ in your brain

Everyone has their own unique response to pain and injury and I can’t emphasize enough the importance of getting a personalised movement assessment to find our your own individual patterning.

The first step is becoming aware, and then you can go about re-wiring your neural pathways and re-building your movement foundation.

If you aren’t consciously creating your movement patterns, you are in default mode - where your environment creates and dictates your movement.

Re-building Movement Patterns

“The more richer, the more varied the possibilities of your movement landscapes, the powerful you are” - Michael Merzencich

Back to our person with lower back pain example mentioned earlier.

Through pain and fear of doing more damage, their movement repertoire has become limited.

This results in:

A reduced ability to adapt to changes in their environment, leading to a higher chance of re-injury

Overload of tissues in the movement patterns that the person feels safe in e.g. they may have been told to always ‘sit up straight’ and the posterior back muscles are in a constant state of tension and activity

The original injury most likely has healed and the person now is dealing with the consequences of the changed movement patterns.

For optimal long term health, gradually adding variability to your movement and posture is a critical skill to learn.

In the world or ergonomics, having a variety of movements trumps locking into a narrow and restricted definition of ‘good posture’.

Creating the right conditions and environment to learn new movement patterns and strategies is what we’ll spend more time discussing this in Part 2 of this blog.

Key Take Home Messages:

The key to tapping into your bodies potential is neuro-plasticity, the process of creating new neural pathways

Understanding neuro-plasticity is the most revolutionary discovery of neuroscience in the past century.

There is great hope for people with chronic pain if you can access the power of movement neuro-plasticity

“The relationship between pain and the state of the tissues becomes weaker as pain persists” - D Lorimer Mosely

Widening our treatment approach to integrate the research on neuro-plasticity may be the missing link in helping people with chronic pain conditions

In Part 2of the blog, we’ll go into depth about how to optimise your lifestyle to enhance and encourage the benefits of movement neuro-plasticity.